Q5. (20 marks) A hollow cylinder with a length of L = 50 cm, an inner radius of a 4.0 cm, and an outer radius of b= 8.0

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Q5 20 Marks A Hollow Cylinder With A Length Of L 50 Cm An Inner Radius Of A 4 0 Cm And An Outer Radius Of B 8 0 1 (111.8 KiB) Viewed 67 times

Q5. (20 marks) A hollow cylinder with a length of L = 50 cm, an inner radius of a 4.0 cm, and an outer radius of b= 8.0 cm must have the interior temperature at Ta = 10°C while the outside temperature is Tb = 35°C. The wall of this cylinder has thermal conductivity k. The rate of heat conduction is P=0.20 W. T.-T (a) Demonstrate that the rate of heat conduction is computed by the formula: P = 21 Lk In(b/a) (b) Find the numerical value of the thermal conductivity k.